Cornicola, Felicio, master of the military at Venice; 738 73 Cornificius, L., Latin poet and consul of Rome; B.C. 35 D.H. X. Cornificius, Quintus, Roman statesman and tribune, friend of Cicero; B.C. D.H.X.Cornificius, Quintus, Roman statesman, ...ornicola, Felicio, master of the military at Venice; 738 73 Cornificius, L., Latin poet and consul of Rome; B.C. 35 D.H. X. Cornificius, Quintus, Roman statesman and tribune, friend of Cicero; B.C. D.H.X. Cornificius, Quintus, Roman statesman, ...
The tundra is the simplest biome in terms of species composition and food chains. Vegetation: lichens, mosses, sedges, perennial forbs, and dwarfed shrubs, (often heaths, but also birches and willows). Growthforms: typical are ground-hugging and other warmth-preserving forms including: 1  tussock-forming graminoids.
Lichens are 'dual' organisms. They consist of two (or more) different life-forms living together symbiotically in a more-or-less well defined body or thallus. The main partner is the fungus or mycobiont. The other partner is a green alga or a cyanobacterium (the photobiont).Many cyanobacteria are able to fix nitrogen which is an essential nutrient. In 10% of lichens (e.g. Collema and Leptogium) the photobiont is a cyanobacterium.ichens are named after the fungal partner. Placopsis gelida. The fungal partner provides a cosy, sheltered environment for the alga, protecting it to some extent from the elements and providing mineral nutrients.